Transaction Value Enabled:

Connecting the world to blockchains

Chainlink is the industry-standard Web3 services platform connecting the people, businesses, and data of today with the Web3 world of tomorrow.

Develop with Chainlink Explore solutions

Questions?

Create Web3 value with Chainlink solutions

Reliable, tamper-proof network

Use decentralization, trusted nodes, premium data, and cryptographic proofs to connect highly accurate and available data/APIs to any smart contract.

Seamless connection to any API

Build on a flexible framework that can retrieve data from any API, connect with existing systems, and integrate with any current or future blockchain.

Proven, ready-made solutions

Integrate pre-built, time-tested oracle solutions that already secure tens of billions in smart contract value for market-leading decentralized applications.

Highly reliable automation

Use a decentralized network of Chainlink Automation nodes to automate contracts, mitigating risk of manual interventions and centralized servers.

Deploy your Chainlink smart contract

Integrate Chainlink services into your dApp today

RUN

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int256:
34361000000

function getThePrice() public view returns (int) {
        (
            uint80 roundID, 
            int price,
            uint startedAt,
            uint timeStamp,
            uint80 answeredInRound
        ) = priceFeed.latestRoundData();
        return price;
    }

Integrate Price Feeds

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uint256:
30218644067796614000

function requestAvgTemp(
    ) external {
        Chainlink.Request memory req = buildChainlinkRequest(
            avgTempJobId,
            address(this),
            this.fulfillAvgTemp.selector
        );
        sendChainlinkRequest(req, fee);
    }

Integrate weather data

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int256:
168000000000000000000

function requestScore(
    ) external {
        Chainlink.Request memory req = buildChainlinkRequest(
            sportScoreJobId,
            address(this),
            this.fulfillWinner.selector
        );
        sendChainlinkRequest(req, fee);
    }

Integrate sports data

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TRUE

function checkUpkeep(
    bytes calldata checkData
  )
    external
    returns (
        bool upkeepNeeded,
        bytes memory performData
    );

Integrate Chainlink Automation

RUN

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int256:
1164636110501196599387136881304611
0418128642690385609708155250752713
810786281

unit256 public randomResult; 
function fulfillRandomness(uint256 requestId, unit256[] randomness) internal override {
       randomResult = (randomness[0] % 50) + 1;
}

Integrate Chainlink VRF

RUN

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int256:
425500000000000000000

function requestData() public returns (bytes32 requestId) 
{
    Chainlink.Request memory request = buildChainlinkRequest(jobId, address(this), this.fulfill.selector);
    request.add("get", "https://my-api.com/endpoint");
    request.add("path", "status");    
    return sendChainlinkRequestTo(oracle, request, fee);
}
function fulfill(bytes32 _requestId, uint256 _response) public recordChainlinkFulfillment(_requestId)
{
    response = _response;
}

Access any external data

Powering the future of smart contracts

“Part of composability is that you don’t have to build everything by yourself. Chainlink’s oracle is very good, and it’s part of this whole composability idea, it’s vital.”

“We really did our due diligence and looked around... Chainlink is definitely the most established, and every time we dealt with them the level of expertise was incredible so I feel like we are in good hands.”

“This product is built on the foundation of blockchain technology and utilizes Arbol’s smart contracts along with decentralized weather data provided by Chainlink to offer users a product unlike any other on the market.”

"Public network infrastructure provisioning has been a core business model of telco companies for decades. Providing critical Web3 infrastructure by running Chainlink oracle nodes has enabled new revenue streams and opened the door to Web3 opportunities."

View Chainlink Data Feeds Explore solutions

Build and learn with Chainlink

Verifiable randomness

Join Chainlink’s global open-source community

Chainlink is open-source technology that is collectively developed by a large community of developers, researchers, and users who share the goal of building Chainlink into a public good for the benefit of the entire blockchain ecosystem.

Get involved through our grant programs

The Chainlink Grant Program funds individuals and teams building a more functional, accessible, and impactful smart contract economy.

Chainlink news

Australian Bank ANZ leveraging Chainlink’s CCIP for cross-chain operability

Wednesday’s announcement signifies increasing harmony between the global financial system and the digital assets industry

Swift unlocks potential of tokenisation with successful blockchain experiments

Chainlink’s Cross-Chain Interoperability Protocol (CCIP) enabled complete interoperability between the source and destination blockchains.

Chainlink's Interoperability Protocol, Connecting Blockchains to ‘Bank Chains,’ Goes Live

This is the launch of the standard that could connect all of the blockchains and all of the bank chains, Sergey Nazarov said in an interview with CoinDesk.

Australian Bank ANZ leveraging Chainlink’s CCIP for cross-chain operability

Wednesday’s announcement signifies increasing harmony between the global financial system and the digital assets industry

Swift unlocks potential of tokenisation with successful blockchain experiments

Chainlink’s Cross-Chain Interoperability Protocol (CCIP) enabled complete interoperability between the source and destination blockchains.

Chainlink's Interoperability Protocol, Connecting Blockchains to ‘Bank Chains,’ Goes Live

This is the launch of the standard that could connect all of the blockchains and all of the bank chains, Sergey Nazarov said in an interview with CoinDesk.

Bloomberg TV: Sergey Nazarov discusses AI and blockchain technology

Sergey Nazarov, Co-Founder of Chainlink, a Web3 services platform, says blockchains are AI resistant because they are built to resist adversaries.

Connecting the world to blockchains

Create Web3 value with Chainlink solutions

Reliable, tamper-proof network

Seamless connection to any API

Proven, ready-made solutions

Highly reliable automation

Integrate Chainlink services into your dApp today

Powering the future of smart contracts

Build and learn with Chainlink

What Is Chainlink? A Beginner’s Guide

77+ Smart Contract Use Cases Enabled By Chainlink

How to Connect Any API with Chainlink

Build, Deploy, and Sell Your Own Dynamic NFT

Join Chainlink’s global open-source community

Get involved through our grant programs

Chainlink news

Australian Bank ANZ leveraging Chainlink’s CCIP for cross-chain operability

Swift unlocks potential of tokenisation with successful blockchain experiments

Chainlink's Interoperability Protocol, Connecting Blockchains to ‘Bank Chains,’ Goes Live

Australian Bank ANZ leveraging Chainlink’s CCIP for cross-chain operability

Swift unlocks potential of tokenisation with successful blockchain experiments

Chainlink's Interoperability Protocol, Connecting Blockchains to ‘Bank Chains,’ Goes Live

Bloomberg TV: Sergey Nazarov discusses AI and blockchain technology

Connecting the world to blockchains

Create Web3 value with Chainlink solutions

Reliable, tamper-proof network

Seamless connection to any API

Proven, ready-made solutions

Highly reliable automation

Integrate Chainlink services into your dApp today

Powering the future of smart contracts

Build and learn with Chainlink

What Is Chainlink? A Beginner’s Guide

77+ Smart Contract Use Cases Enabled By Chainlink

How to Connect Any API with Chainlink

Build, Deploy, and Sell Your Own Dynamic NFT

Join Chainlink’s global open-source community

Get involved through our grant programs

Chainlink news

Australian Bank ANZ leveraging Chainlink’s CCIP for cross-chain operability

Swift unlocks potential of tokenisation with successful blockchain experiments

Chainlink's Interoperability Protocol, Connecting Blockchains to ‘Bank Chains,’ Goes Live

Australian Bank ANZ leveraging Chainlink’s CCIP for cross-chain operability

Swift unlocks potential of tokenisation with successful blockchain experiments

Chainlink's Interoperability Protocol, Connecting Blockchains to ‘Bank Chains,’ Goes Live

Bloomberg TV: Sergey Nazarov discusses AI and blockchain technology

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